species deposition or wall reaction ?
Hi,
I want to model a species deposition problem. A fluid carries species A along a wall. Species A deposits/is adsorbed/reacts at the wall. The deposition/adsorption/reaction rate is modelled like 1st order reaction. It seems that there are different options: 1) species transport + surface chemistry; QUESTIONS: Do I have to define both A(site) and A(solid) with a reaction scheme like A(solution) --> A(site) A(site) --> A(solid) or Can I define only A(site) with a reaction scheme like A(solution) --> A(site) ? What would be the site dednsity ? Would the reaction be like Obviously I did not find the surface chemistry tutorial very helpful. 2) UDS + UDE flux at the wall; QUESTIONS: Should I use DEFINE_PROFILE, returning flux = -k F_UDSI(f,t,i) and read it in the wall BC's (flux) for the UDS 3) define a volume sink close to the wall. Thanks |
Re: species deposition or wall reaction ?
Hi,
can anyone comment on my message ? Is it so obvious ? Thanks |
The same Problem
I have the same problem and I am trying to implement the second option.
I get negative species fraction (UDS value) at the wall. Any suggestion? |
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